388 
BULLETIN OF THE BUREAU OF FISHERIES 
but whole body heavier. Stomach region deeper, intestine more convoluted, all 
trace of yolk material gone. Marginal fin fold as in preceding stage, but notochord 
turned slightly upward and concentration marking beginning of caudal ray develop- 
ment evident below. 
Pigmentation. — Black eyes, a large single vent spot, and six tiny chromatophores 
along ventral ridge of tail characterize this larval stage. 
10 .0-millimeter stage . — Total length, 10.0; length to vent, 4.5; greatest depth, 
1.5; diameter of eye, 0.5 millimeter. Myomeres, 11 to vent plus 23 behind. Dorsal 
marginal fin fold originating just behind head, rising evenly and slowly to the highest 
point about halfway between vent and peduncle; anal similar to dorsal; starting 
behind vent, 16 elements of dorsal fin rays, widely separated, and 13 anal below; 
ventrals I, 4, inserted just behind pectorals; pectorals 14, fully rayed, large, round; 
caudal rayed. Head and body stout to anus, compressed behind; interorbital space 
wider than in adult; eye rather small and bulging; mouth terminal, oblique, lower 
jaw projecting; preopercle with a short, straightish spine directed backward and 
upward, and two smaller spines below; subopercle with a stout spine directed 
downward. 
Pigmentation. — Four surface chromatophores occur on ventral aspect at begin- 
ning of stomach region, 1 (subsurface) at base of left pectoral, 1 of very large size on 
left side of intestine almost at vent, and 1 on ventral aspect slightly less than halfway 
from vent to end of body. 
Later 10.0-millimeter stage . — Total length, 10.0; standard length, 9.0; length to 
vent, 4.16; length of head, 2.12; snout, 0.55; diameter of eye, 0.45; greatest depth 
before vent, 1.7; depth behind vent, 1.6 millimeters. Myomeres, 10 to vent plus 
24 behind. Slightly older specimen of same length as preceding but with head further 
developed, and elements of dorsal and anal fins quite completely formed. Pec- 
torals longer, reaching three-quarters of distance from base to vent. 
Pigmentation. — Unchanged from preceding. 
11.0-millimeter stage . — Total length, 11.0; standard length, 9.5; length to vent, 
4.45; length of head, 2.6; snout, 0.75; diameter of eye, 0.6; greatest depth before vent, 
2.1; depth behind vent, 1.3 millimeters. Myomeres, 12 to vent plus 22 behind. 
